1
Tadahiro Ohmi, Mamoru Miyawaki, Yoshio Nakamura, Hiroshi Suzuki, Takeo Yamashita: Semiconductor devices utilizing silicide reaction. Canon Kabushiki Kaisha, Tadahiro Ohmi, Fitzpatrick Cella Harper & Scinto, April 18, 2000: US06051851 (62 worldwide citation)

Cheap semiconductor memory devices are provided so as to enable high-speed writing and reading but rarely to malfunction, thus being high in reliability. In a semiconductor device which comprises a plurality of cells each having a semiconductor layer between a pair of conductors, at least one of the ...


2
Yoshihiro Shiroishi, Takeo Yamashita, Sadao Hishiyama, Noriyuki Kumasaka, Yoshibumi Matsuda, Hiroyuki Suzuki, Kazumasa Takagi, Norikazu Tsumita, Masaki Ohura, Tomoyuki Ohno: Longitudinal magnetic recording media and magnetic memory units. Hitachi, Antonelli Terry Stout & Kraus, September 15, 1992: US05147732 (53 worldwide citation)

Disclosed are longitudinal recording media comprising a composite magnetic film formed on a nonmagnetic substrate directly or through a nonmagnetic underlayer, in which all of magnetic thin films constituting the composite magnetic film are magnetically connected, the composite magnetic film has a s ...


3
Noriyuki Kumasaka, Hideo Fujiwara, Noritoshi Saito, Shigekazu Otomo, Takeo Yamashita, Mitsuhiro Kudo: Magnetic film structure. Hitachi, Antonelli Terry & Wands, September 9, 1986: US04610935 (26 worldwide citation)

A magnetic film structure comprises at least one magnetic film unit wherein a plurality of main magnetic films of 0.05 to 0.5 .mu.m thickness made of a magnetic alloy containing iron or cobalt as principal constituent and having a high saturation magnetic induction of 10,000 gauss or more and a magn ...


4
Noriyuki Kumasaka, Hideo Fujiwara, Shigekazu Otomo, Takeo Yamashita, Shinji Takayama, Noritoshi Saito, Nobuo Kobayashi, Mitsuhiro Kudo: Magnetic head and method of fabricating same. Hitachi, Antonelli Terry & Wands, December 17, 1985: US04559572 (26 worldwide citation)

A magnetic head core and a method of fabricating same, wherein a magnetic circuit is constituted by a pair of magnetic films having a V-shaped cross section which face each other at each protrudent section through the gap material. The cross-sectional portion of the V-shaped film is exposed to the s ...


5
Noriyuki Kumasaka, Kazuo Shiiki, Shigekazu Otomo, Yoshihiro Shiroishi, Takeo Yamashita, Noritoshi Saito, Kiminari Shinagawa, Mitsuhiro Kudo: Multilayered ferromagnetic amorphous alloy film and magnetic head employing the same. Hitachi, Antonelli Terry & Wands, May 31, 1988: US04748089 (19 worldwide citation)

A multilayered ferromagnetic amorphous alloy film is constituted by a plurality of main ferromagnetic material alloy films of a ferromagnetic amorphous alloy laminated one upon another with a spacer ferromagnetic material layer interposed therebetween, the spacer ferromagnetic material layer being o ...


6
Noriyuki Kumasaka, Hideo Fujiwara, Shigekazu Otomo, Takeo Yamashita, Shinji Takayama, Noritoshi Saito, Mitsuhiro Kudo: Composite type magnetic head for recording and reproducing high frequency signals. Hitachi, Antonelli Terry & Wands, April 7, 1987: US04656547 (17 worldwide citation)

There is provided a structure of a composite type magnetic head and its manufacturing method. The composite type magnetic head comprises: two high permeability ferrite blocks with projections having nearly edged sections formed thereon; magnetic films having a high saturation flux density deposited ...


7
Jinzo Watanabe, Takeo Yamashita, Masakazu Nakamura, Shintaro Aoyama, Hidetoshi Wakamatsu, Tadashi Shibata, Tadahiro Ohmi, Nobuhiro Konishi, Mizuho Morita, Hisayuki Shimada, Takashi Imaoka: Oxide film forming method. Tadahiro Ohmi, Takasago Netsugaku Kogyo Kabushiki Kaisha, Baker & Daniels, November 14, 2000: US06146135 (16 worldwide citation)

Vacuum processing equipment capable of preventing particles from sticking to objects to be processed in vacuum vessels. The vacuum equipment comprises a series of vacuum vessels separated by doors, and the pressure in the vessels are reducible respectively. The vessels are so configured that objects ...


8
Yoshihiro Shiroishi, Hideo Fujiwara, Takeshi Kimura, Noriyuki Kumasaka, Nobuo Kobayashi, Takeo Yamashita, Teizo Tamura, Hideo Zama, Mitsuhiro Kudo, Tsutomu Iimura: Magnetic head. Hitachi, Hitachi Metals, Antonelli Terry & Wands, March 27, 1984: US04439794 (16 worldwide citation)

A magnetic head which uses single crystal Mn-Zn ferrite containing up to 7% by weight of SnO.sub.2 occluded therein without being allowed to separate and which has such a construction that glass having a contraction rate lower than that of ferrite is filled in the narrowed portion near the gap, the ...


9
Noriyuki Kumasaka, Hideo Fujiwara, Shigekazu Otomo, Takeo Yamashita, Noritoshi Saito, Mitsuhiro Kudo: Magnetic head having an integrated recording and playback head and an erasure head. Hitachi, Antonelli Terry & Wands, September 27, 1988: US04774616 (15 worldwide citation)

The present invention relates to a magnetic head, which can form guard bands on a magnetic recording medium and which is especially suitable for magnetic discs, and a fabrication process thereof. The magnetic core of the present invention includes a recording and reproduction head core (31) and an e ...


10
Shigekazu Otomo, Noriyuki Kumasaka, Takeo Yamashita, Juichi Morikawa, Takayuki Kobayashi, Mitsuhiro Kudo: Magnetic recording and reproducing system with composite magnetic head. Hitachi, Antonelli Terry and Wands, March 15, 1988: US04731683 (14 worldwide citation)

The invention discloses a magnetic recording and reproducing system using a composite magnetic head whose surface facing a magnetic recording medium is composed primarily of a ferromagnetic metal and a high permeability ferrite single crystal, and which has a region close to a gap and composed of th ...



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